77394907 has 2 divisors, whose sum is σ = 77394908. Its totient is φ = 77394906.

The previous prime is 77394887. The next prime is 77394917. The reversal of 77394907 is 70949377.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77394907 is a prime.

It is not a weakly prime, because it can be changed into another prime (77394917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38697453 + 38697454.

It is an arithmetic number, because the mean of its divisors is an integer number (38697454).

Almost surely, 2^77394907 is an apocalyptic number.

77394907 is a deficient number, since it is larger than the sum of its proper divisors (1).

77394907 is an equidigital number, since it uses as much as digits as its factorization.

77394907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 333396, while the sum is 46.

The square root of 77394907 is about 8797.4375246432. The cubic root of 77394907 is about 426.1581458579.

The spelling of 77394907 in words is "seventy-seven million, three hundred ninety-four thousand, nine hundred seven".